Follow Nathaniel Garro’s perilous flight from the Isstvan system in James Swallow’s The Flight of the Eisenstein, the fourth book in the Horus Heresy Saga. After the devastating ambush set in motion by Horus’s traitors, the steadfast Death Guard captain sets out on a journey that could change the course of the saga. With the Warmaster’s betrayal still unknown, the fate of the Siege of Terra hangs in the balance.